Technical Articles

How is IP rating tested?

The Ingress Protection (IP) rating is an important standard used to classify the level of protection provided by electronic devices against solid objects and liquids. This rating is crucial in determining the device's suitability for specific environments or applications. Testing IP rating involves a series of rigorous procedures to ensure accurate and reliable results. In this article, we will dive into the intricate details of how IP rating is tested.

Understanding the IP Code

Before delving into the testing process, let's first understand the IP code. The IP code consists of two digits; the first digit represents the level of protection offered against solid objects, while the second digit represents the level of protection against moisture.

For instance, an IP68 rating indicates that the device has complete protection against dust (level 6) and is resistant to continuous submersion in water beyond 1 meter (level 8).

Testing Solid Object Protection

In order to test the device's resistance against solid objects such as dust and debris, a specialized chamber is utilized. The chamber releases fine particles of varying sizes to determine the smallest particle size that the device can protect against effectively.

This is done by gradually increasing the particle size until it enters the device. The particle size corresponding to the failure point is then recorded, and the device's IP rating for solid object protection is determined accordingly.

Testing Moisture Protection

Testing the device's resistance against moisture is equally crucial. A series of tests are performed to evaluate its ability to withstand water penetration under different conditions and pressures.

The device is subjected to various scenarios, including splashing, dripping, and submersion in water at varying depths and durations. These tests simulate real-life situations to determine the device's IP rating for moisture protection.


Obtaining an accurate and reliable IP rating is essential for manufacturers, as it assures customers that their devices are suitable for specific environments or applications. Through rigorous testing of solid object and moisture protection, the IP rating provides valuable information for users.

Understanding the IP code and the testing process helps us make informed decisions when selecting electronic devices based on their required level of protection. Now, armed with this knowledge, you can confidently choose devices that meet your specific needs.



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